Pain after Isoflurane in dogs

The FDA has received 63 reports of pain in dogs after Isoflurane. That is 2.3% of all reports for this medicine, compared with 0.7% across reports for all dog medicines, so it is reported unusually often with this medicine.

63Reports
60%Marked serious
22%Recovered
24%Died or euthanised
2 daysTypical onset
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How soon it started

Same day
12 27%
1–2 days
11 25%
3–7 days
9 20%
1–4 weeks
9 20%
Over a month
3 6.8%

How the animals did

Recovered
13 21%
Recovered with lasting effects
1 1.6%
Still unwell when reported
16 25%
Died
8 13%
Euthanised
7 11%
Not known
18 29%

Problems reported at the same time

Age of the animals

Under 1 year
10
1–3 years
15
4–7 years
13
8–11 years
18
12+ years
3

About this medicine

Type: medicine.

Questions owners ask

Can Isoflurane cause pain in dogs?
63 reports link the two, but a report alone does not prove the medicine was the cause: other illnesses, other medicines or coincidence can be involved. Your vet can judge it for your animal.
How soon after a dose was it reported?
In half of the reports with dates, it started within 2 days of the first dose.
What should I do?
Don't give another dose until you've spoken to your vet, and keep the packaging so you can tell them the product and dose. Your vet can also report it to the FDA (or you can, through the manufacturer or FDA form 1932a).

Pain with similar medicines

All reported side effects of Isoflurane in dogs · Medicines most reported with pain